the common thread of rational or functional design could be detect ed in all building at the Weissenhof Siedlung, and the project of German architects were not dissimilar in appearance to those produced by designers from other countries. this esthetic affinity and a book, Internationale Architektur(1925) by Walter Gropius, led Alfred H Barr of the Museum of Modern Art in New York to call the modern architecture of the late 1920s the International style.